JPH04367469A - Food preservation container - Google Patents

Abstract

PURPOSE:To preserve home-made dishes for a long term with a simple apparatus such as a microwave oven, etc., and simple operation. CONSTITUTION:A container consists of an open-top container main body 2 made of heat-resistant dielectric of earth, porcelain, heat-resistant glass or heat-resistant plastic, a removable lid 3 that covers the opening of the container main body 2 and is made of heat-resistant dielectric of earth, porcelain, heat- resistant glass or heat-resistant plastic, and a annular heat resistant packing 4 that is attached out the lid 3. The packing 4 is composed of a base part 4 and a thin membrane-like tongue 4b that is gradually reduced in thickness toward the edge and the base part 4a and the tongue 4b form a nearly V-shaped cross-section. The packing 4 made of heat-resistance rubber or plastic has a specified elasticity so that the back face of the tongue 4b is brought in close contact with an opening upper face 2b of the container main body 2 when the lid 3 is closed and the base part 4a comes in close contact with the tongue 4b when the container main body 2 is evacuated.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a container for storing food, and in particular to a container for storing food. , relates to a food storage container that can maintain a vacuum state with a check valve.

0002

BACKGROUND OF THE INVENTION Conventionally, food storage containers have only been glass bottles with sealed lids equipped with rubber packing, or canned goods whose holes are brazed and sealed after heating with steam.
The former was unsuitable for long-term storage, and the latter required large-scale facilities and was not suitable for general household use. For this reason, there has been a desire to develop a food storage container that can be easily used at home.

[0003] As a conventional technique related to this type of food storage container, there is a technique disclosed in Japanese Utility Model Publication No. 8795/1983. This relates to a vacuum food storage container, in which a lid with a vacuum control valve attached to the top surface is placed on the rim of the upper opening of the container via packing, and the lid is attached to the top of the container. It is used by tightening by screwing together the tightening ring. Therefore, this vacuum food storage container uses a large number of various parts and has an extremely complicated structure.

0004

[Problem to be solved by the invention] However, in recent years, with the spread of simple heating devices such as microwave ovens in general households,
There has been a demand for a simple food storage container that can be used for cooking, heating, etc. food, and can also store the food as it is for a long period of time.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a food storage container that can preserve foods such as prepared dishes and dishes at home for a long period of time using a simple device such as a microwave oven and simple operation. be.

[0006]

[Means for Solving the Problems] The food storage container according to the present invention can be removably attached to the opening of the container body made of a heat-resistant dielectric material such as ceramics, porcelain, heat-resistant glass, or heat-resistant synthetic resin. The lid body is made of a heat-resistant dielectric material such as earthenware, porcelain, heat-resistant glass, or heat-resistant synthetic resin, and has a base and a thin film-like tongue piece that has a predetermined elasticity and has a roughly V-shaped cross section. A heat-resistant packing is attached, and the lower surface of the tongue of the packing comes into close contact with the upper surface of the opening of the container body when the lid is closed, and the base and the tongue come into close contact when the inside of the container is under negative pressure. .

[0007]

[Function] In the food storage container of the present invention, the lid made of a heat-resistant dielectric material that can be removably attached to the opening of the container body made of a heat-resistant dielectric material has a predetermined elasticity. A heat-resistant packing having a substantially V-shaped cross section is attached, and when the lid is closed, the lower surface of the tongue of the packing comes into close contact with the upper surface of the opening of the container body, and when the inside of the container is under negative pressure, the base and the tongue come into close contact with each other. Since the parts are in close contact with each other, a heating device such as a microwave oven can be used, and when food, etc. is placed inside the container body and the lid is closed, the tongue of the packing will close to the opening of the container body. If the container is heated with the lid closed, the inside of the container will be pressurized, and due to the pressure difference between the inside and outside of the container, heating will occur inside the container from the gap between the packing tongue and the top of the opening of the container body. The air, water vapor, etc. released are released to the outside, and when heating is completed, the tongue firmly adheres to the surface of the container body due to suction force, and the base and tongue come into close contact, and as cooling progresses, the inside of the container The pressure gradually becomes negative pressure, and this negative pressure state is maintained for a long period of time to maintain the seal.

[0008]

[Examples] Examples of the present invention will be described below.

FIG. 1 is a sectional view showing a food storage container according to an embodiment of the present invention in a closed state, and FIG. 2 is a cross-sectional view showing a food storage container according to an embodiment of the present invention in an open state. FIG.

In the figure, 1 is the food storage container of this embodiment, and 2 is a heat-resistant container body made of earthenware, porcelain, heat-resistant glass, heat-resistant synthetic resin, or the like. 3 is a heat-resistant lid made of ceramics, porcelain, heat-resistant glass, heat-resistant synthetic resin, etc. that can removably cover the opening of the container body 2; 4 is a heat-resistant lid that is interposed between the container body 2 and the lid 3; It is a heat-resistant packing having a predetermined elasticity made of heat-resistant rubber or heat-resistant synthetic resin, and this packing 4 consists of a base 4a and a tongue 4b connected to the base 4a, and the tip of the tongue 4b is connected to the base. The thickness gradually decreases from the side 4a toward the tip, and the thickness is thinner. When the lid is open, it has a substantially V-shaped cross section, with the tip of the tongue portion 4b hanging downward (see FIG. 2). The base 4a of the packing 4 is attached along the outer circumferential surface 3b of the protrusion 3a of the lid 3 and the flange 3c. Note that when the lid 3 is placed on the container body 2, a predetermined gap exists between the inner circumferential surface 2a of the container body 2 and the outer circumferential surface 3b of the protrusion 3a of the lid 3.

That is, in the food storage container 1 of this embodiment, a packing 4 made of an elastic material such as heat-resistant rubber or heat-resistant synthetic resin and having a substantially V-shaped cross section and a thin membrane-like tongue portion 4b is attached to the lid 3. It is inserted between the flange portion 3c and the upper surface 2b of the wide opening at the upper edge of the outer periphery of the container body 2. Moreover,
Since the container body 2, lid 3, and packing 4 are all made of heat-resistant materials, this food storage container 1
It is possible to easily heat the food F by putting it in the container and using a heating device such as a household microwave oven.

Next, the operation of heating food and preserving the heated food using this food storage container will be explained.

First, as shown in FIG. 2, when the food F is put into the container body 2 and the lid 3 is attached halfway, the container body 2 is moved from the tip side of the tongue portion 4b of the packing 4 to the base side. , and finally the entire lower surface of the tongue portion 4b of the packing 4 comes into close contact with the opening upper surface 2b of the container body 2.

When the food is heated in a heating device such as a microwave oven with the lid closed, the food is heated and the pressure inside the container increases, and due to the pressure difference between the inside and outside of the container, the heated air and water vapor inside the container are heated. It passes between the inner circumferential surface 2a of the container body 2 and the outer circumferential surface 3b of the protruding portion 3a of the lid body 3, and is emitted to the outside from between the packing 4 and the flange portion 2b of the container body 2. That is, the water vapor generated inside the container flips up the thin membrane-like tongue portion 4b of the packing 4, and the water vapor is released to the outside. However, since the tongue portion 4b is thin, it comes into close contact with the upper surface 2b of the opening of the container body 2 immediately after releasing the steam, etc., and functions as a check valve. Due to the function of the packing 4 as a check valve, the steam inside the container can be released relatively smoothly, but the inflow of outside air is suppressed. For this reason, the release of heated air, water vapor, etc. inside the container to the outside is an extremely short, almost instantaneous release, and although the pressure inside the container once drops after the release of steam, it rises again due to heating. As the steam rises and steam etc. are released again, this process is repeated one after another, resulting in intermittent release.

When the food storage container 1 is removed from the heating device after heating, the inside of the container body 2 changes to negative pressure, so the tongue portion 4b of the packing 4 is pulled into the container body 2 by suction force.
At the same time, the base portion 4a and the tongue portion 4b also come into close contact with each other, so that the inside of the container is sealed. In this way, the flange portion 3c of the lid body 3 and the container body 2 are quickly connected.
The packing 4 is tightly sandwiched between the upper surface 2b of the opening (see FIG. 1), and the seal is maintained for a long time. Container body 2
As the food F inside cools, the negative pressure inside the container body 2 gradually increases, and this negative pressure state is maintained, maintaining the seal for a long time.

In this way, the food storage container 1 of this embodiment
includes a container body 2 having an opening made of a heat-resistant dielectric material such as ceramics, porcelain, heat-resistant glass, or heat-resistant synthetic resin, and a container body 2 that can be removably attached to the opening of the container body 2. A lid body 3 made of a heat-resistant dielectric material such as glass or heat-resistant synthetic resin, a base portion 4a attached to the lid body 3, and a thin film-like tongue extending from the base portion 4a and gradually decreasing in thickness toward the tip. The piece 4b forms a substantially V-shaped cross section, and when the lid is closed, the lower surface of the tongue 4b and the upper surface 2b of the opening of the container body 2 come into close contact, and when the inside of the container is under negative pressure, the base 4a and the tongue A heat-resistant packing 4 having a predetermined elasticity made of heat-resistant rubber or heat-resistant synthetic resin and in close contact with the piece 4b is provided.

Therefore, since the container body 2, the lid 3, and the packing 4 are made of heat-resistant materials, the food F can be put into the food storage container 1 and heated by a heating device such as a household microwave oven. It can be easily heated using When the food F etc. is placed in the container body 2 and the lid 3 is closed, the tongue portion 4b of the packing 4 is in close contact with the upper surface 2b of the opening of the container body 2, and the lid remains in this closed state. When heated, the inside of the container is pressurized, and the heated air, water vapor, etc. inside the container are released to the outside from the gap between the tongue portion 4b and the opening top surface 2b of the container body 2 due to the pressure difference inside and outside the container. In this way, air, water vapor, etc. inside the container are released to the outside almost instantaneously and intermittently due to heating. When heating is finished,
The tongue portion 4b of the packing 4 is brought into close contact with the surface of the container body 2 again by the suction force, and the base portion 4a and the tongue portion 4b are also brought into close contact. As the cooling progresses, the pressure inside the container gradually becomes negative, and the base and tongue portion come into close contact with each other, and this negative pressure state is maintained for a long period of time, maintaining the seal. As a result, it becomes a food storage container that can preserve foods such as prepared dishes and dishes at home for a long period of time using a simple device and simple operation. Furthermore, if the lid 3 is removed, the container body 2 can be placed on a dining table and used as a food container.

In particular, in this embodiment, the container body 2 and the lid 3 are
A packing 4 having a substantially V-shaped cross section is interposed between the container body 2 and the lid body 3, and the gap between the container body 2 and the lid body 3 is doubly sealed by the base portion 4a and the tongue portion 4b, so that airtightness is extremely high. . Further, since the food storage container 1 is constituted by the container body 2, the lid 3, and the double packing 4, it does not require many various parts and has an extremely simple structure with a small number of parts. Moreover, by simply putting the food F into the container body 2, closing the lid, and heating it with a heating device such as a microwave oven, food can be easily cooked, heated, etc., and can be cooled in that state. The food can be stored for a long time.

By the way, in the above embodiment, the lid 3 is described as having a protrusion 3a in the entire center of the lower surface and a flange 3c around the periphery, but the shape of the lid 3 is not necessarily limited to the above shape. For example, the lid 3
Even if an annular flange is formed on the lower surface of the flange and the outer circumferential surface of the flange is used, the same function as in this embodiment is achieved. In particular, if such a shape is adopted, the weight of the food storage container 1 as a whole can be reduced, and the material cost can be reduced. Further, in the above embodiment, a case was explained in which a microwave oven was used as a heating device to heat the food storage container 1, but the container body 2 may be directly heated by a stove or the like, and in such a case, the container body 2 2 and the lid 3 need not be made of dielectric material. Furthermore, in the above embodiment, the thickness of the entire container body 2 is made relatively thick, and the tongue portion 4b of the packing 4 is in close contact with the upper surface 2b of the opening of the container body 2. The thickness may be reduced, and a flange portion may be formed with a width that allows the tongue portion 4b of the packing 4 to come into close contact with the upper opening of the container body 2.

[0020]

As explained above, the food storage container of the present invention is made of a heat-resistant dielectric material, has a container main body and a lid body having an opening, and has a predetermined elastic container having a substantially V-shaped cross section. and a heat-resistant packing having a heat-resistant structure, the packing is attached to a lid body that can be detachably attached to the opening of the container body,
When the lid is closed, the lower surface of the tongue of the packing comes into close contact with the upper surface of the opening of the container body, and when the inside of the container is under negative pressure, the thickness of the tongue gradually decreases as it approaches the annular base of the packing and its tip. This allows heating devices such as microwave ovens to be used, and when food, etc. is placed inside the container and the lid is closed, the tongue of the packing will come into close contact with the surface of the container. If the container is heated with the lid closed, the inside of the container will be pressurized, and due to the pressure difference between the inside and outside of the container, heated air, water vapor, etc. inside the container will be released from the gap between the tongue of the packing and the top surface of the opening of the container body. is released to the outside and when heating is complete, the tongue sticks to the surface of the container body due to suction force, and the base and tongue stick together, and as cooling progresses, the negative pressure inside the container increases, and this Since the negative pressure state is maintained for a long period of time and the airtightness is maintained, foods such as prepared dishes and dishes prepared at home can be stored for a long period of time with a simple device and simple operation.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the lid of a food storage container according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a food storage container according to an embodiment of the present invention in an open state.

[Explanation of symbols]

1 Food storage container 2
Container body 2a Inner circumferential surface 2b Opening top surface 3 Lid 3a Projecting portion 3b Outer circumferential surface 3c Flange portion 4 Packing 4a Base portion 4b Tongue portion F Food

Claims (1)

[Claims] 1. A container body made of a heat-resistant dielectric material and having an opening; a lid made of a heat-resistant dielectric material that can be removably attached to the opening of the container body; The annular base to be attached and the thin tongue part whose thickness gradually decreases toward the tip form a substantially V-shaped cross section, and when the lid is closed, the lower surface of the tongue part and the opening of the container body 1. A food storage container characterized by comprising heat-resistant packing having a predetermined elasticity so that the top surface of the base portion and the tongue portion are in close contact with each other, and the base portion and the tongue portion are in close contact with each other when the inside of the container is under negative pressure.